JPH0955897A - Television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display on-screen characters on a reduced picture without omission by providing a character position moving means which shifts inward the position of the station number from a character signal generation means on the screen to insert a character signal. SOLUTION: First, horizontal and vertical synchronizing signals HD2 and VD2 from a synchronizing signal separator are used to set the station numbers to the same position on reception pictures of respective stations. Next, a signal WTEN (finishing) which reports the end of write from a multi-PIP (picture-in- picture) processing part is used to move downward only station numbers of stations whose display positions set in prescribed positions on respective reduced pictures are placed in the upper stage of a multi-screen picture on the display part. WTEN+1<=n is discriminated by a discriminator 212, and a discriminated station number 215 is obtained through a vertical direction delay line 213. A delay station number 216 and a station number 217 which is not discriminated by the discriminator 212 are added by an adder 214, and a station number 218 as the addition result is supplied to a character signal insertion part 202.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver having a wide aspect ratio capable of dividing a plurality of images and displaying them simultaneously on a single display device.

[0002]

2. Description of the Related Art Currently, not only terrestrial broadcasting but also satellite broadcasting using a broadcasting satellite (hereinafter referred to as BS) or a communication satellite (hereinafter referred to as CS) is being performed. To receive this satellite broadcast, a television receiver equipped with a converter or the like is commercially available. However, since the number of channels is increasing in the future, convenience in selecting a broadcast channel is required.

On the other hand, as for terrestrial broadcasting, the second generation EDTV broadcasting is under consideration, and it is shifting to the current television broadcasting having a wide aspect ratio of 4: 3 to 16: 9 while maintaining compatibility with the current broadcasting. There is a direction to do. Second generation E
In DTV broadcasting, in order to maintain compatibility with current broadcasting, 4:
When a video image with an aspect ratio of 3 is displayed on a display device with an aspect ratio of 16: 9, compression in the horizontal direction is performed and a video image with 4: 3 is displayed on the display device.

When receiving terrestrial broadcasts and satellite broadcasts on a television receiver having such a wide aspect ratio, from the viewpoint of convenience of channel selection as described above, the marginal portion of the screen generated by compression is removed. Proposals and the like to be used are disclosed.

One of the proposals is disclosed in Japanese Patent Laid-Open No. 62-2637.
There is one as described in Japanese Patent No. 81. This proposal discloses a television receiver which displays an image of another channel and an image of a high-definition television system in the margin of the screen. In this way, the images of each station are displayed at the same time in addition to the selected image, which gives the viewer the convenience of selecting a channel.

Furthermore, a television receiver having a wide aspect ratio is provided with two tuners, and the image of a broadcasting station selected by one of the tuners is 1 / horizontally in the horizontal direction.
Compressed by 2 and the left half of the display device (hereinafter referred to as the main screen side)
In addition, in the other tuner, broadcasting stations are sequentially and repeatedly tuned, and the received images of a plurality of broadcasting stations are simultaneously reduced images and the right half of the display device (hereinafter referred to as the sub-screen side). There is known a television receiver or the like which is capable of being displayed on the main screen side and is instantly switched to the main screen side when one of the reduced images on the sub-screen side is selected (see Japanese Patent Application No. 7-030880). reference). Here, by adding the station information such as the broadcast station number to the reduced image on the sub-screen side, the viewer is given more convenience in channel selection.

However, in the conventional technique described in Japanese Patent Application No. 7-030880, the position of the character display (hereinafter referred to as on-screen display) for the reduced image on the sub-screen side does not disturb the image content. By doing so, since the character information such as the subtitles superimposes on the lower side of each video, it is displayed in the upper corner of each video. Further, the addition positions of the character display are respectively added and displayed at the same position of the received video.

Therefore, there is a problem that the on-screen display on the sub-screen side may be missing due to overscan of the television receiver.

[0009]

As described above, the conventional television receiver has a problem that the on-screen display of the reduced image on the sub-screen side may be lost due to overscan.

In view of the above problems, it is an object of the present invention to provide a television receiver capable of displaying on-screen characters displayed on a reduced image forming a multi-screen image without missing.

[0011]

According to the first aspect of the present invention,
A television receiver having a wide aspect ratio capable of dividing and displaying a plurality of video broadcasts at the same time, the input means for inputting control information and tuning information, and according to the tuning information from the input means, A first tuning means for selecting and receiving one broadcast radio wave from a plurality of broadcast radio waves, performing signal processing on the received signal and outputting, and a plurality of receivable broadcast stations are sequentially and repeatedly selected. A second tuning means for intermittently receiving broadcast radio waves from each broadcasting station, performing signal processing on the received signal and outputting the signal, and horizontally compressing the video signal from the first tuning means. First to output
The compression means, the character signal generation means for generating the station number of the station information of the broadcast channel received from the second tuning means, and the character signal generation means for generating the video signal from the second tuning means. In order to display as a reduced image by dividing the character signal inserting means for inserting the station number and the video signal of each broadcasting station supplied from the character signal inserting means,
Second compression means for compressing and outputting in the horizontal and vertical directions, and video signals compressed in the horizontal direction by the first compression means, and compressed in the horizontal and vertical directions by the second compression means. And a synthesizing means for synthesizing and outputting the video signal from the first compression means and the video signal from the second compression means, in order to divide the video signals of the respective stations and display them simultaneously as a video. A display means for displaying the video signal from the synthesizing means as a video, and a position of the station number from the character signal generating means, shifted inward in the screen, and supplied to the character signal inserting means. A position moving means is provided.

In the present invention according to claim 1, since the character position moving means is provided, even if the television receiver overscans, the station number displayed on-screen in the reduced image on the sub-screen side is It can be displayed by shifting inward, and it is possible to prevent the station number from being missing and becoming difficult to see.

According to a second aspect of the present invention, there is provided a television receiver having a wide aspect ratio capable of dividing and displaying a plurality of video broadcasts at the same time, and an input means for inputting control information and channel selection information. A first tuning means for selecting and receiving one broadcast radio wave from a plurality of broadcast radio waves according to the tuning information from the input means, performing signal processing on the received signal, and outputting the signal; Broadcast stations in sequence,
Second tuning means for repeatedly selecting a channel, intermittently receiving broadcast radio waves of each broadcasting station, performing signal processing on the received signal and outputting the signal, and a video signal from the first tuning means. A first compression means for horizontally compressing and outputting
A character signal generating means for generating a station number of the station information of the broadcast channel received from the second tuning means, and a station number generated by the character signal generating means for the video signal from the second tuning means. Second, for inserting the character signal inserting means to be inserted and the video signal of each broadcasting station supplied from the character signal inserting means and dividing the video signal to display as a plurality of reduced images, which are compressed in the horizontal and vertical directions and output. Of the compression means and the video signal of each broadcasting station supplied from the character signal insertion means are divided, and a third compressed image is output in the horizontal and vertical directions in order to display a plurality of reduced images on the entire screen. And the video signal horizontally compressed by the first compressing means and the video signals of the respective stations compressed horizontally and vertically by the second compressing means are divided and simultaneously imaged. In order to display the same, the synthesizing means for synthesizing and outputting the video signal from the first compressing means and the video signal from the second compressing means, and the video signal from the synthesizing means as an image. Switching means for selectively switching whether to display or to display the video signal from the third compression means as a video, and a video from the switching means. A display means for displaying the signal as an image, and a character position moving means for shifting the position of the station number from the character signal generating means to the inner side of the screen and supplying it to the character signal inserting means are provided. It is characterized by

According to a third aspect of the present invention, there is provided a television receiver having a wide aspect ratio capable of dividing and displaying a plurality of video broadcasts at the same time, the input means for inputting control information and channel selection information. A first tuning means for selecting and receiving one broadcast radio wave from a plurality of broadcast radio waves according to the tuning information from the input means, performing signal processing on the received signal, and outputting the signal; Broadcast stations in sequence,
Second tuning means for repeatedly selecting a channel, intermittently receiving broadcast radio waves of each broadcasting station, performing signal processing on the received signal and outputting the signal, and receiving from the second tuning means Character signal generating means for generating a station number of station information of a broadcast channel; character signal inserting means for inserting the station number generated by the character signal generating means into the video signal from the second tuning means; The video signal of each broadcasting station supplied from the signal inserting means is divided, and a compression means for compressing and outputting in the horizontal and vertical directions in order to display a plurality of reduced videos on the full screen, and the first tuning. Switching means for selectively switching, in response to a control signal from the input means, whether to display the video signal from the means as a video or the video signal from the compression means as a video; The display means for displaying the video signal from the converting means as a video, and the position of the station number from the character signal generating means are shifted inward on the screen to move the character position to be supplied to the character signal inserting means. Means and means are provided.

According to the second and third aspects of the present invention, since the character position moving means is provided, the television receiver overscans when only the divided reduced image is displayed on the entire display screen of the display means. However, the station number displayed on-screen in the reduced image on the sub-screen side can be shifted and displayed in the inner direction of the screen, and it is possible to prevent the station number from being missing and becoming difficult to see.

According to a fourth aspect of the present invention, in the television receiver according to any one of the first to third aspects, the character moving means outputs the divided video signal from the second compression means. When the display means is located above the display position, the position of the station number from the character signal generating means is shifted downward.

According to the present invention of claim 4, even if the television receiver overscans, the on-screen display position is moved downward when the compressed image on the sub-screen side is in the upper stage of the display position. By doing so, it is possible to prevent the lack of on-screen display. According to a fifth aspect of the present invention, in the television receiver according to any one of the first to third aspects, the character moving means causes the divided video signal from the second compressing means to be displayed. When the display position of the means is on the right side, the position of the station number from the character signal generating means is shifted to the left side.

According to the fifth aspect of the present invention, even if the television receiver overscans, if the compressed image on the sub-screen side is on the right side of the display position, the on-screen display position is moved to the left side. Therefore, it is possible to prevent the lack of on-screen display.

According to a sixth aspect of the present invention, in the television receiver according to any one of the first to third aspects, the character moving means receives the divided video signal from the second compressing means. When it is on the left side of the display position of the display means, the position of the station number from the character signal generating means is shifted to the right side.

According to the sixth aspect of the present invention, even if the television receiver overscans, the on-screen display position is moved to the right side when the compressed image on the sub-screen side is on the left side of the display position. Therefore, it is possible to prevent the lack of on-screen display.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments will be described with reference to the drawings. FIG. 1 is an embodiment of a television receiver according to the present invention. 2 is a configuration block diagram for explaining the IF image processing unit of FIG. 1, and FIG. 3 is a block diagram of FIG.
FIG. 4 is a configuration block diagram for explaining the multi-PIP processing unit of FIG. 4, and FIG. 4 is a diagram showing an image projected from the display unit of FIG. 1. 2 is a configuration block diagram for explaining the character position moving unit of FIG.

As shown in FIG. 1, the broadcast radio wave is transmitted to the antenna 10.
Then, the first tuner 101 synchronizes with the selected channel in accordance with the instruction from the operation unit 111 serving as an input unit. The instruction from the operation unit 111 is supplied to the first channel selection control unit 102.
Is supplied to the first tuner 101 to tune the selected channel.

In the first tuner 101, the broadcast radio wave of the selected station is converted into an intermediate frequency (hereinafter referred to as IF) and I
It is supplied to the F detection / image processing unit 300. Further, the luminance signal (hereinafter referred to as Y signal) and the color signal (hereinafter referred to as I and Q signal) from the IF detection / video processing unit 300 are supplied to the horizontal compression unit 103, and the horizontal compression unit 103 is supplied to the horizontal compression unit 103. Then, 1/2 time axis compression is performed in the horizontal direction. The signal compressed by the horizontal compression unit 103 is supplied to the synthesis unit 104. First tuner 101 and video signal processing unit 300
And the first tuning control unit 102 constitute a first tuning unit. The first tuning means is for selecting and receiving one broadcast radio wave from a plurality of broadcast radio waves according to the tuning information from the operation unit 111, performing signal processing on the received signal, and outputting the signal.

As shown in FIG. 2, the IF detection / video processing unit 300 includes a video intermediate frequency amplification unit 302, a video detection unit 303, a Y / C separation unit 304, a Y delay unit 305, and a color demodulation unit 306. The signal 301 from the tuner is processed.

First, the video intermediate frequency amplifier 302 amplifies the signal from the tuner to obtain a sufficient amplitude, and the video detector 303 in the next stage detects the signal. The detected signal is separated into Y / C by the Y / C separation unit 304, and the Y delay unit 3
05, the Y signal 307 and the I and Q signals (308, 309) are obtained through the color demodulation unit 306, and the horizontal compression unit 103 of the next stage is obtained.
To supply. IF detection / image processing unit 3 shown in FIG.
The configuration of 00 is the same for the IF detection / image processing unit 310. In this portion, in addition to the Y signal, I and Q signals are extracted in order to correctly demodulate the color signal. Also,
The detected signal is supplied from the video detection unit 303 to the synchronization separation unit 108. For the sake of simplicity, in the block diagram of FIG.
Only the path is shown with the luminance signal and the color signal as video signals.

Further, the signal from the sync separation section 108 is supplied to the deflection section 109, and further, the deflection signal is supplied from the deflection section 109 to the display section 107. An image is displayed on the display unit 107 based on the deflection signal.

On the other hand, the signal converted to IF by the second tuner 105 is another IF detection / image processing unit 31.
0, the multi-PIP (Pic
tureInPicture) processing unit 400. Similar to the first tuning means, the second tuner 105, the second tuning control section 106, and the IF detection / video processing section 310 constitute the second tuning means. The second tuning means is for sequentially and repeatedly selecting a plurality of receivable broadcasting stations, intermittently receiving broadcast radio waves of each broadcasting station, performing signal processing on the received signal, and outputting the signal. Is.

On the other hand, the character signal generator 200 uses the tuning voltage from the second tuning controller 106 to generate the station number of the broadcasting station. In order to set this station number to an arbitrary position in the video received from the IF detection / video processing unit 310, the character position moving unit 201 moves the display character position. The character position moving unit 201 sequentially shifts the position of the station number to be inserted into the video received intermittently, for example, toward the inner side of the screen of the display unit 107. The specific configuration of the character position moving unit 201 will be described with reference to FIGS.
And it mentions later in FIG. Then, the character position moving unit 2
The station number from 01 is inserted into the video signal of the IF detection / video processing unit 310 by the character signal insertion unit 202, and the multi-PIP is performed.
It is supplied to the processing unit 400. The character signal inserting section 202 is composed of, for example, a switch section and an adding section, and inserts a station number into the video signal.

In the multi-PIP processing unit 400, in addition to the horizontal and vertical synchronization signals (HD2, VD2) from the synchronization separation unit 110, the horizontal and vertical synchronization signals (HD1) from the synchronization separation unit 108 are also included.
/ VD1) is also supplied and operates in synchronization with the first tuning means. The multi-PIP processing unit 400 compresses the video signal of each station in the horizontal and vertical directions.

As shown in FIG. 3, the multi-PIP processing unit 400 converts the signal 401 from the character signal insertion unit 202 into A /
The D conversion unit 402 converts the signal into a digital signal, performs digital signal processing, and then the D / A conversion unit 406 converts the analog signal 407 for output. The digital signal processing unit performs horizontal sub-sampling to limit the band and reduce the sampling rate, and a vertical filter sub-sampling unit 403 that performs vertical sub-sampling to thin horizontal scanning lines. Sampling unit 404, video memory 405, video memory 4
Input control clock generation unit 40 for controlling writing of signal 05
8 and an output control clock generator 409 for controlling the reading of the video memory 405. The band limitation in the horizontal filter / sub-sampling unit 403 is performed by using a horizontal low-pass filter to prevent aliasing when the sampling rate is lowered.

Horizontal filter / subsampling unit 403
The vertical filter / sub-sampling unit 404 also reduces the sampling rate and compresses the amount of video data. Further, the compressed video signal is written and stored in the video memory 405.

The storage in the video memory 405 is performed for each station, and when the storage of one station in the video memory 405 is completed, the multi-PIP processing unit 400 sends a signal (WTEN) indicating the end of the writing to the second channel selection control. It is supplied to the unit 106. When this end signal (WTEN) is supplied, the second tuning control unit 106 sets the tuning voltage of the next station to the second tuner 1.
It will be supplied to 05. Second tuner 10
In 5, the video signal of the next station is detected by the IF detection / video processing unit 31.
0, and the multi-PIP processing unit 400 performs horizontal and vertical compression, and stores the video data of the next station in the video memory 405 as in the previous operation. By repeating this operation, the video signal of each broadcasting station is stored in the video memory 4
I will memorize it in 05. In addition, since the writing to the video memory 405 must be performed after the channel selection is surely performed by the second tuner 107, the input control clock generation unit 408 stabilizes the reception operation of the second tuner 105. In order to determine whether or not the horizontal separation signal HD2 is counted from the sync separation circuit 110, the writing operation of the video memory 405 is started when the horizontal synchronization signal HD2 becomes a certain value or more.

The stored video signal is read at a clock frequency synchronized with the horizontal and vertical synchronizing signals (HD1, VD1) and supplied to the synthesizing unit 104.

The synthesizing unit 104 is composed of, for example, a switch unit and an adding unit, and adds and synthesizes the video signal from the horizontal compression unit 103 and the video signal from the multi-PIP processing unit 400 and supplies it to the display unit 107. . Note that the multi-PIP processing unit 400 and the horizontal compression unit 103 may not perform D / A conversion, but may perform D / A conversion after performing a synthesizing process on a digital signal and output to the display unit 107.

In the display unit 107, as shown in FIG. 4, the video data X which is ½ compressed in the horizontal direction is displayed on the left side of the screen, for example, and the multi-screen video Y consisting of the reduced video of each station is displayed on the right side of the screen. To do. As a result, a reduced screen in which the broadcast channels are sequentially switched, that is, a channel search screen is displayed. The area shown by the broken line in the multi-screen image is the multi-P
Display unit 10 from IP processing unit 400 via combining unit 104
This is the video information supplied to No. 7.

The operation section 111 receives instructions from the viewer and controls the first and second channel selection control sections 102 and 106 and the multi-PIP processing section 400.

The operation of FIG. 1 will be described. First tuner 1
01 synchronizes with the channel signal selected by the operation unit 111, converts the video signal of this channel into IF, and supplies the IF signal to the IF detection / video processing unit 300. This video signal is compressed by the horizontal compression unit 103 so that the horizontal direction becomes 1/2 and is supplied to the synthesis unit 104.

On the other hand, in the second tuner 105, during this period, VHF band or UHF band broadcast and satellite broadcast are sequentially selected, and the video signals of the respective stations are stored in the video memory 405 in the multi-PIP processing section 400. ing. The station number of each station generated by the character signal generation unit 200 according to the channel selection control is inserted into the character signal insertion unit 202 via the character position moving unit 201 for the video signal of each station sequentially selected. The video signals in which the respective station numbers are inserted are sequentially stored in the video memory 405 in the multi-PIP processing unit 400. The display position of the station number inserted in each multi-screen image output from the multi-PIP processing unit 400 needs to be displayed at a position that does not interfere with the display of each reduced image forming the multi-screen image. Yes, in general, the position is often set to the upper side, right side, left side, or the like of each reduced screen. Therefore, if the station number is set to the upper side, right side, left side, etc. of each reduced screen, if the right half screen is composed of a plurality of reduced screens arranged vertically and horizontally, the upper row, right column, or It becomes difficult to see the station number of the reduced screen located in the left column due to overscan. Therefore, in the character position moving unit 201, the position of the station number of the reduced screen set in the upper row, the right column, or the left column on the right half screen does not become difficult to see due to overscanning (that is, each reduced size). It is designed to shift inward of the screen). Since the station numbers inserted in the reduced screen at the center of the multi-screen image are not affected by overscan or the like, the character position moving unit 201 does not perform control to move the station number position. Of course.

The video signals of the stations selected in sequence are converted into multi P
Since the image cannot be displayed on the right side of the screen while the image is being stored in the image memory 405 in the IP processing unit 400, a message such as "setting search screen" is output from the reduced image side screen. Keep it. When all the set reduced images are stored in the video memory 405, they are read out from the video memory 405 based on the sync signals HD1 and VD1 from the sync separation unit 108, and this is read out.
Supply to The synthesizing unit 104 is provided with a switch unit, and switches the input path of the video signal in the first half and the second half of the horizontal scanning. These signals are added by the addition unit and output to the display unit 107. Note that the reduced image is a still screen and is repeatedly read from the image memory 405.
it's shown. Therefore, the selected video and the reduced video can be displayed simultaneously from the two screens on the left side and the right side, and the selected video and the back program can be viewed at the same time.
Therefore, it is possible to select a program on the other screen while enjoying the image on one screen, and the station number required for program selection is not overlooked due to overscan or the like. .

Next, an embodiment of the character position moving unit 201 of FIG. 1 will be described. FIG. 5 is a block diagram showing an embodiment of the character position moving unit 201 in FIG. In this embodiment, when the video signal read from the video memory 405 is located on the upper side of the projected screen of the display unit 107, the station number from the character signal generation unit 200 is moved downward. It is an operation.

The operation of the character position moving unit 201 will be described for n × m reduced screens (n: number of horizontal screens, m: number of vertical screens, n = m = 3 in FIG. 4).

The character position moving unit 201 inputs the character signal from the character signal generating unit 200 as shown in FIG. 5, and sets the station number in the horizontal direction and the vertical direction in order to set the station number in the same position of the received image of each station. The horizontal delay line 210 and the vertical delay line 211 for delaying each by a predetermined amount, and the write end signal WTEN for each station from the multi-PIP processing unit 400 are counted from the minimum receiving channel to the number counted for each receiving station.
Judgment unit 2 for judging whether or not the number obtained by adding "1" is less than or equal to the number n of reduced screens arranged in the horizontal direction (that is, WTEN + 1≤n).
12, and if the result of the determination is that WTEN + 1 ≦ n, the determined delay screen station number is delayed by the vertical delay line 213 for delaying by a predetermined amount in the vertical direction and the determination delay from the vertical delay line 213. The adder 214 is configured to add the station number and the station number from the discriminator 212 that is not discriminated (and thus not delayed) and output the sum to the character signal insertion unit 202.

First, the horizontal and vertical sync signals (HD2, VD2) from the sync separator 110 are used in order to set the station number to the same location in the received video of each station. Since the setting points are based on the horizontal and vertical synchronizing signals (HD2, VD2), the delay line 210 is set to a predetermined delay amount when it is delayed in the horizontal direction, and the delay line 211 is set to a predetermined delay amount when it is delayed in the vertical direction. To

Next, since the display position of the station number of each station set at a predetermined position on each reduced screen is located in the upper part of the multi-screen image Y on the display unit 107, it is moved downward. A signal (WTEN) from the multi-PIP processing unit 400 indicating the end of writing is used. The discriminator 212 discriminates (WTEN + 1 ≦ n), and the discriminated station number 21
The station number delayed by a predetermined amount is obtained via the delay line 213 that delays 5 in the vertical direction. The discrimination of the discriminator 212 is
It may be (WTEN <n). Then, the discriminator 212
And the station number 216 delayed by the delay line 213.
The station number 217 not discriminated by the discriminator 212 is added to the adder 2
Then, the added station number 218 is supplied to the character signal insertion unit 202.

By the character position movement described with reference to FIG. 5, the station number Z whose display position of the station number is located in the upper stage of the display unit 107 is moved to the lower position Z'in the figure as shown in FIG.

FIG. 6 shows the character position moving unit 20 shown in FIG.
It is a block diagram which shows other embodiment of 1. In this embodiment, when the video signal read from the video memory 405 is located on the right side of the projected screen of the display unit 107, the operation of moving the position of the station number from the character signal generation unit 200 to the left side. Is to do. The same parts as those in FIG. 5 will be described with the same reference numerals.

In FIG. 6, a discriminator 212A is used in place of the discriminator 212 of FIG. 5, and a horizontal delay line 213A is used in place of the vertical delay line 213.

The discriminator 212A includes the multi-PIP processing unit 4
A function for determining the number of write end signals WTEN for each station from 00 for each receiving station other than the number of reduced screens n arranged in the vertical direction (that is, not located on the right side of the reduced screen) from the minimum receiving channel. Have. That is, the judging device 2
12 is (WTEN + 1 ≠ 1 + n × a), where a = 0
.. (m-1), the station numbers other than those located on the right side of the multi-screen image Y are determined, and the station number is delayed in the horizontal direction. In order to realize this, the horizontal delay line 210, the vertical delay line 211, and the vertical delay line 211 are arranged so that the positions of the station numbers on all the reduced screens of the multi-screen image Y are located at the upper right corner of each reduced screen, for example. The delay amount of the horizontal delay line 213A is set appropriately. That is, the delay amount of the horizontal delay line 210 is set smaller than that in the case of FIG. 5, and the delay amount of the horizontal delay line 213A is set to be larger by the reduced amount. The delay amount of the vertical delay line 211 is the same as that in the case of FIG.

In this way, the delay line 213 that determines the station number 215 other than the one located on the right side of the multi-screen image Y by the determiner 212A and delays the determined station number 215 in the horizontal direction.
A station number 216 delayed by a predetermined amount is obtained via A. At this time, since the delay amount of the delay line 210 is reduced by the delay amount of the delay line 213A, only the station number on the right side of the multi-screen image Y not discriminated by the determiner 212A is not delayed. Only the station number on the right side of will move to the left side relative to the station number on the right side.

FIG. 7 is a diagram showing an image of the embodiment of FIG. 6 displayed on the display unit 107 of FIG. In this way, the station number Z whose display position of the station number is located on the right side of the display unit 107 moves to the position Z ′ on the left side.

FIG. 8 shows the character position moving unit 20 in FIG.
It is a block diagram which shows other embodiment of 1. In this embodiment, when the video signal read from the video memory 405 is located on the left side on the projection screen of the display unit 107, the operation of moving the station number position from the character signal generation unit 200 to the right side. Is to do. The same parts as those in FIG. 5 will be described with the same reference numerals.

In FIG. 8, a discriminator 212B is used instead of the discriminator 212 of FIG. 5, and a horizontal delay line 213B is used instead of the vertical delay line 213.

The discriminator 212B includes the multi-PIP processing unit 4
The number of the write end signal WTEN for each station from 00, which is obtained by adding "1" to the number counted from the minimum receiving channel for each receiving station, is the number n of reduced screens arranged in the vertical direction (that is, located on the left side of the reduced screens). It has a function to judge the thing. That is, the determining unit 212B determines (WTEN + 1 = n × a), where a = 1 to m, determines the one located on the left side of the multi-screen image Y, and determines the determined station number 215 as the horizontal delay line 213B. The delayed station number 216 is obtained by delaying by a predetermined amount. The station numbers 217 that are not discriminated by the discriminator 212B are output without being delayed by the delay line 213B except those located on the left side of the multi-screen image Y. The delay line 2 is discriminated by the discriminator 212B.
The station number 216 delayed by 13B and the station number 217 not discriminated by the discriminator 212B are added by the adder 214,
The added station number 218 is supplied to the character signal insertion unit 202.

In this way, the one located on the left side of the multi-screen image Y is determined by the determiner 212B, and the determined station number 215 is delayed by a predetermined amount via the delay line 213B for delaying in the horizontal direction. Obtained station number 216. Judge 2
The station numbers on the left side of the multi-screen image Y are not delayed relative to the station number 216 except those located on the left side of the multi-screen image Y which are not discriminated in 12B. Will move relatively to the right.

FIG. 9 is a diagram showing an image of the embodiment of FIG. 8 displayed on the display unit 107 of FIG. In this way, the station number Z whose display position of the station number is located on the left side of the display unit 107 moves to the position Z ′ on the right side.

In the above-mentioned embodiment, the left half displays the video data X which is 1/2 compressed in the horizontal direction, and the right side displays the screen of the multi-screen video Y composed of the reduced video of each station. In the present invention, the opposite screen arrangement is adopted, that is, the video data X which is 1 / 2-compressed in the horizontal direction is displayed on the right side, and the screen of the multi-screen video Y composed of the reduced video of each station is displayed on the left side. Of course, it is okay.

Further, in the above-mentioned embodiment, the screen of the multi-screen image Y consisting of the reduced images of each station is displayed on the display unit 107 on either one of the two left and right screens. However, the present invention is not limited to this, and can be applied to a receiver capable of displaying the screen of the multi-screen image Y including the reduced image of each station on the entire display unit 107.

10 and 11 show a television receiver capable of displaying a screen of a multi-screen image Y consisting of reduced images of each station on the entire display unit 107.

FIG. 10 is a block diagram showing a television receiver according to another embodiment of the present invention.

In the embodiment shown in FIG. 10, in addition to the embodiment of FIG. 1, the video signals of the respective stations sequentially supplied from the character signal inserting section 202 are divided and arranged, and the video is displayed as a video on the full display screen. Multi-PI for outputting signals
In response to a control signal from the operation unit 600, it is selected whether the video signal from the P processing unit 500 and the synthesizing unit 104 is displayed as a video or the video signal from the video memory unit 500 is displayed as a video. Display 1
07 and a switching unit 600 for supplying the voltage to the power supply unit 07. As in FIG. 3, the multi-PIP processing unit 500 includes an A / D conversion unit, a horizontal filter / subsampling unit, a vertical filter / subsampling unit, a video memory, a D / A conversion unit, and an input control clock. With the generation part,
Although it is composed of an output control clock generator, the horizontal compression rate is different from that of the multi-PIP processor 400.

According to this structure, it is possible to display a multi-screen video image including the reduced video images of each station on the entire display unit 107, and the position of the station number of the reduced screen can be changed as in FIG. It is possible to shift the display to a position where it is not difficult to see due to overscan (that is, inward direction of each reduced screen) for display.

The divided video signal output from the multi-PIP processing unit 400 as the second compression unit is displayed instead of the multi-PIP processing unit 500 of FIG. 10 used as the third compression unit. It is also possible to adopt a configuration in which means for horizontally expanding the display screen of the unit 107 is provided.

FIG. 11 is a block diagram showing a television receiver according to still another embodiment of the present invention.

In the embodiment shown in FIG. 11, the horizontal compression unit 103, the synthesizing unit 104, and the multi-PIP processing unit 400 in the embodiment of FIG. 10 are deleted, and the normal channel selection from the IF detection / video processing unit 300 is performed. Of the switching unit 600 is supplied to one input end of the switching unit 600, and the other input end of the switching unit 60 is supplied with a multi-screen video signal from the multi-PIP processing unit 500, which is a reduced image of the full screen of the display device. It is what As in FIG. 10, the multi-PIP processing unit 500 includes an A / D conversion unit, a horizontal filter / subsampling unit, a vertical filter / subsampling unit, a video memory, a D / A conversion unit, and an input control clock. It is composed of a generator and an output control clock generator.

With this configuration, a multi-screen image screen composed of reduced images of each station can be displayed on the entire display unit 107, and the position of the station number of the reduced screen is overlaid as in the case of FIG. It is possible to shift the display to a position where it is not difficult to see by scanning or the like (that is, inward direction of each reduced screen).

[0066]

As described above, according to the present invention, an on-screen display on a multi-screen image composed of a plurality of reduced images can be displayed without omission, so that the reduced image of each station is displayed as an on-screen display. When selecting each station while adding a station number and looking at the reduced screen, it is possible to improve the operability at the time of tuning.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a television receiver according to the present invention.

FIG. 2 is a configuration block diagram of an IF detection / image processing unit in FIG.

FIG. 3 is a block diagram showing the configuration of a multi-PIP processing unit shown in FIG.

FIG. 4 is a diagram showing a screen displayed on the display unit of FIG. 1.

5 is a block diagram showing an embodiment of a character position moving unit in FIG. 1. FIG.

FIG. 6 is a block diagram showing another embodiment of the character position moving unit of FIG. 1.

7 is a diagram showing a case of using the character position moving unit of FIG.
It is a figure which shows the screen displayed on the display part of FIG.

8 is a block diagram showing another embodiment of the character position moving unit of FIG. 1. FIG.

9 is a diagram showing a case where the character position moving unit of FIG. 8 is used,
It is a figure which shows the screen displayed on the display part of FIG.

FIG. 10 is a block diagram showing another embodiment of the television receiver according to the present invention.

FIG. 11 is a block diagram showing another embodiment of the television receiver according to the present invention.

[Explanation of symbols]

 101 ... First tuner 102 ... First tuning control section 101 and 102 and 300 ... First tuning means 103 ... Horizontal compression section (first compression means) 104 ... Synthesis section (synthesis means) 105 ... Second Tuner 106 ... Second tuning control section 107 ... Display section (display means) 105 and 106 and 310 ... Second tuning means 200 ... Character signal generating section (character signal generating means) 201 ... Character position moving section (character Position moving means) 202 ... Character signal inserting section (character signal inserting means) 300 ... IF detection / video processing section 310 ... IF detection / video processing section 400 ... Multi-PIP processing section (second compression means) 500 ... Multi-PIP processing Section (third compression means) 600 ... switching section (switching means)

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[Procedure amendment]

[Submission date] August 17, 1995

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

[Fig. 2]

[Figure 3]

FIG. 4

[Figure 5]

FIG. 6

FIG. 7

[Figure 8]

[Figure 9]

[Figure 10]

FIG. 11

Claims (6)

[Claims] 1. A television receiver having a wide aspect ratio capable of dividing and displaying a plurality of video broadcasts at the same time, comprising: input means for inputting control information and tuning information; A first tuning means for selecting and receiving one broadcast radio wave from a plurality of broadcast radio waves according to the tuning information, performing signal processing on the received signal, and outputting, and a plurality of receivable broadcast stations are sequentially repeated. Second tuning means for intermittently receiving broadcast radio waves of each broadcasting station, performing signal processing on the received signal and outputting the signal, and a video signal from the first tuning means. First compressing means for compressing and outputting in the horizontal direction; character signal generating means for generating a station number of station information of the broadcast channel received from the second tuning means; and second tuning means To the video signal from Character signal inserting means for inserting the station number generated by the signal generating means, and the video signal of each broadcasting station supplied from the character signal inserting means is divided and compressed in the horizontal and vertical directions to be displayed as a reduced image. Second compression means for outputting the same and the video signal horizontally compressed by the first compression means, and the video signal of each station horizontally and vertically compressed by the second compression means. Is divided and simultaneously displayed as an image, a combining means for combining and outputting the image signal from the first compressing means and the image signal from the second compressing means, and the combining means from the combining means. Display means for displaying a video signal as a video, and character position moving means for shifting the position of the station number from the character signal generating means to the inner side of the screen and supplying it to the character signal inserting means. Television receiver, characterized in that it was. 2. A television receiver having a wide aspect ratio capable of dividing and displaying a plurality of video broadcasts at the same time, the input means for inputting control information and channel selection information; A first tuning means for selecting and receiving one broadcast radio wave from a plurality of broadcast radio waves according to the tuning information, performing signal processing on the received signal, and outputting, and a plurality of receivable broadcast stations are sequentially repeated. Second tuning means for intermittently receiving broadcast radio waves of each broadcasting station, performing signal processing on the received signal and outputting the signal, and a video signal from the first tuning means. First compressing means for compressing and outputting in the horizontal direction; character signal generating means for generating a station number of station information of the broadcast channel received from the second tuning means; and second tuning means To the video signal from Character signal inserting means for inserting the station number generated by the signal generating means, and the video signal of each broadcasting station supplied from the character signal inserting means is divided and displayed in a plurality of reduced images in the horizontal and vertical directions. Second compression means for compressing and outputting the video signal of each broadcasting station, which is supplied from the character signal inserting means, and is displayed in the horizontal and vertical directions so as to be displayed as a plurality of reduced video images on the full screen. Third compression means for compressing and outputting the compressed video signal to each of the stations, and the video signals compressed horizontally in the first compression means together with the stations compressed in the horizontal and vertical directions in the second compression means. Combining means for combining and outputting the video signal from the first compressing means and the video signal from the second compressing means for dividing and displaying the video signal as a video at the same time; Should be displayed as a video a video signal from,
Alternatively, switching means for selectively switching whether to display the video signal from the third compression means as a video in response to a control signal from the input means, and the video signal from the switching means as a video. A display unit for displaying, and a character position moving unit for shifting the position of the station number from the character signal generating unit to the inner side of the screen and supplying it to the character signal inserting unit. Television receiver to do. 3. A television receiver having a wide aspect ratio capable of dividing and displaying a plurality of video broadcasts at the same time, the input means for inputting control information and channel selection information; A first tuning means for selecting and receiving one broadcast radio wave from a plurality of broadcast radio waves according to the tuning information, performing signal processing on the received signal, and outputting, and a plurality of receivable broadcast stations are sequentially repeated. Second tuning means for intermittently receiving broadcast radio waves of each broadcasting station, performing signal processing on the received signal and outputting the signal, and the broadcast received from the second tuning means. Character signal generating means for generating a station number of channel station information; character signal inserting means for inserting the station number generated by the character signal generating means into the video signal from the second tuning means; From the insertion means A video signal from the first tuning means, which is for compressing and outputting in a horizontal and vertical direction to divide the video signal of each broadcasting station to be supplied and to display it as a plurality of reduced video images on the full screen. Switching means for selectively switching, in response to a control signal from the input means, whether to display the signal as a video or the video signal from the compression means as a video; A display unit for displaying the video signal as a video; and a character position moving unit for shifting the position of the station number from the character signal generating unit inward of the screen and supplying the character signal inserting unit. A television receiver characterized in that 4. The position of the station number from the character signal generating means, when the divided video signal from the second compressing means is in the upper stage on the display position of the display means. The television receiver according to claim 1, wherein the television receiver is shifted downward. 5. The position of the station number from the character signal generating means when the divided video signal from the second compressing means is on the right side of the display position of the display means. Is shifted to the left, The television receiver according to claim 1, wherein 6. The position of the station number from the character signal generating means when the divided video signal from the second compressing means is on the left side of the display position of the display means. Is shifted to the right, The television receiver according to claim 1, wherein